"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : ALTER PROCEDURE
Case Name   : 系统管理员所有者修改procedure所有者后调用procedure
Create At   : 2022/05/11
Owner       : opentestcase004
Description :
    1.创建用户
    2.创建procedure
    3.修改procedure的所有者为新建用户
    4.联合系统表pg_proc,pg_user查询procedure的所有者
    5.调用procedure
    6.清理环境
Expect      :
    1.成功
    2.成功
    3.成功
    4.成功
    5.返回新建用户
    6.成功
History     :
"""

import os
import unittest
from yat.test import macro
from testcase.utils.Constant import Constant
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Logger import Logger


class Procedure(unittest.TestCase):
    def setUp(self):
        self.logger = Logger()
        self.primary_sh = CommonSH('PrimaryDbUser')
        self.Con = Constant()
        self.user = 'u_alter_procedure_0025'
        self.procedure = 'p_alter_procedure_0025'

    def test_alter_procedure(self):
        self.logger.info(f'-----{os.path.basename(__file__)} start-----')
        step = 'step1:创建用户 expect:成功'
        self.logger.info(step)
        create_user = self.primary_sh.execut_db_sql(f'''
            drop user if exists {self.user} cascade;
            create user {self.user} with password '{macro.PASSWD_REPLACE}';
            ''')
        self.logger.info(create_user)
        self.assertIn(self.Con.CREATE_ROLE_SUCCESS_MSG, create_user,
                      '执行失败' + step)

        step = 'step2:创建procedure expect:成功'
        self.logger.info(step)
        create_pro = self.primary_sh.execut_db_sql(
            f'''create or replace procedure {self.procedure}(out var3 int)
            is
            var1 int:= 1;
            var2 int:= 2;
            begin
                var3 := (select var1 + var2);
            end;''')
        self.logger.info(create_pro)
        self.assertIn(self.Con.CREATE_PROCEDURE_SUCCESS_MSG, create_pro,
                      '执行失败' + step)

        step = 'step3:修改procedure的所有者为新建用户 expect:成功'
        self.logger.info(step)
        alter_procedure = self.primary_sh.execut_db_sql(
            f'''alter procedure {self.procedure}() owner to {self.user};''')
        self.logger.info(alter_procedure)
        self.assertIn(self.Con.ALTER_FUNCTION_SUCCESS_MSG, alter_procedure,
                      '执行失败' + step)

        step = 'step4:联合系统表pg_proc,pg_user查询procedure的所有者 ' \
               'expect:返回新建用户'
        self.logger.info(step)
        select_user = self.primary_sh.execut_db_sql(
            f'''select usename from pg_user where usesysid = 
            (select proowner from pg_proc where proname = '{self.procedure}');
            ''')
        self.logger.info(select_user)
        self.assertIn(self.user, select_user, '执行失败' + step)

        step = 'step5:调用procedure expect:成功'
        self.logger.info(step)
        call_pro = self.primary_sh.execut_db_sql(
            f'''call {self.procedure}(null);''')
        self.logger.info(call_pro)
        self.assertEqual(str(call_pro.splitlines()[2]).strip(), '3',
                         '执行失败' + step)

    def tearDown(self):
        step = 'step6:清理环境 expect:清理环境成功'
        self.logger.info(step)
        clean_environment = self.primary_sh.execut_db_sql(
            f'''drop user {self.user} cascade;''')
        self.logger.info(clean_environment)
        self.assertIn(self.Con.DROP_ROLE_SUCCESS_MSG, clean_environment,
                      '执行失败' + step)
        self.logger.info(f'-----{os.path.basename(__file__)} end-----')
